In the News:

Amentum Launches as Independent Professional and Technical Services Company Serving the U.S. Federal Government, Select Allied Governments, and Commercial Markets

John Vollmer Amentum CEO headshot

Affiliates of American Securities and Lindsay Goldberg Complete Acquisition of Business Formerly Known as AECOM Management Services

GERMANTOWN, Md.; Feb. 4, 2020 – Amentum, a leading contractor to the U.S. federal and allied governments, today announced that it has launched as an independent company, following successful completion of the sale of the AECOM Management Services business to affiliates of Lindsay Goldberg and American Securities LLC.

Amentum provides its federal government customers with essential services in the areas of mission support and equipment sustainment, information technology, intelligence, nuclear and environmental remediation, threat mitigation, mission assurance, facility maintenance, and range services in the U.S. and abroad.

“Amentum builds upon a 116-year heritage of safety, operational excellence and delivering on our promises and honoring our commitments,” said John Vollmer, Chief Executive Officer. “We are excited to continue this legacy as an independent company and continue to deliver outstanding performance for our customers’ critical missions.”

Amentum is a privately held company where American Securities and Lindsay Goldberg are equal partners focused on both organic growth and long-term expansion.

“The launch of Amentum represents a significant milestone for the business, its customers and employees,” said Russell Triedman, Partner at Lindsay Goldberg. “As a focused, stand-alone company, Amentum will be more agile and better positioned to deliver enhanced capabilities and innovation to help its blue-chip clientele achieve their most important objectives.  We look forward to working alongside John and our partners at American Securities to support Amentum’s growth.”

“Amentum is a unique company in the government services market due to its intense customer focus, wealth of experience, and sense of purpose,” said Ben Dickson, a Managing Director of American Securities. “The company stands side-by-side with its customers, and we are excited to have this opportunity to work in partnership with Lindsay Goldberg to help grow Amentum’s relationships with new and existing customers across all mission areas.”


About Amentum

Amentum is a premier global technical and engineering services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. We draw from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Germantown, Md., we employ more than 20,000 people in 48 states and 28 foreign countries and territories. Visit us at to explore how we deliver excellence for our customers’ most vital missions.

About American Securities

Based in New York with an office in Shanghai, American Securities is a leading U.S. private equity firm that invests in market-leading North American companies with annual revenues generally ranging from $200 million to $2 billion and/or $50 million to $250 million of EBITDA. American Securities and its affiliates have approximately $23 billion under management. For more information, visit

About Lindsay Goldberg

Lindsay Goldberg is a private investment firm that focuses on partnering with families, founders and management teams seeking to actively build their businesses. Founded in 2001, Lindsay Goldberg’s relationship-driven approach is centered upon a collaborative investment model and supported by its global network of affiliate partners. For more information about Lindsay Goldberg, please visit

For Amentum:

Chanel Mann
+1 (682) 788-5685

[email protected]
Follow @Amentum_corp on Twitter

For Lindsay Goldberg:

Jonathan Gasthalter/Nathaniel Garnick

Gasthalter & Co.

+1 (212) 257-4170

For American Securities:

Amy Harsch

American Securities

+1 (212) 476-8071

Scroll to Top
Cookies are used on this site to assist in continually improving the candidate experience and all the interaction data we store of our visitors is anonymous. Learn more about your rights on our Privacy Policy page.